Method for reproducing correct images from incorrect exposure im

Details Method for reproducing correct images from incorrect exposure im Method for reproducing correct images from incorrect exposure im

1990-01-12

1990-12-04

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Methods

355 35, 355 38, G03B 2732

Patent

active

049757377

ABSTRACT:
For a color photosensitive material, a conversion table is created in order to convert three-color separation densities into Densities obtained by monochromatic Exposure (DME), and characteristic curves with respect to the DME's are created. The conversion table is used in order to convert three-color separation densities of respective picture elements of an incorrectly exposed image into DME's corresponding to the respective picture elements. The characteristic curves with respect to the DME's are used in order to convert the DME's corresponding to the respective picture elements of the incorrectly exposed image into DME's which correspond to a correctly exposed image. An image is then reproduced on the basis of the DME's which correspond to a correctly exposed image and which are thus found for the respective picture elements.

REFERENCES:
patent: 4335956 (1982-06-01), Findeis et al.
patent: 4344704 (1982-08-01), Thurm et al.
patent: 4359280 (1982-11-01), Krause
patent: 4406538 (1983-09-01), Buhler
patent: 4525065 (1985-06-01), Takagi et al.
patent: 4526462 (1985-07-01), Hope et al.
patent: 4566786 (1986-01-01), Fursich et al.
patent: 4643563 (1987-02-01), Sayanagi
patent: 4872034 (1989-10-01), Ohta et al.
patent: 4884102 (1989-11-01), Terashita
patent: 4929978 (1990-05-01), Kanamori et al.

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